Improvement in rolls for horseshoe-blanks



ing operations.

' UNITED STATES PATENT OEEICE.

JOHN W. KINGSBURY, OF NEW BEDFORD, MASSAGHUSETTS,ASS1GNOR TO HIMSELF AND L. H. KOLLOGK, OF SAME PLAGE.

IMPROVEMENT IN ROLLS FOR HORSESHOE-BLANKS` Specification forming part of Letters Patent No. 39,7 73, dated September l, 18631.

To all whom it may concern:

Be it known that I, JOHN W. KINGSBUEY, of New Bedford, in the county of Bristol and State ot` Massachusetts, have invented a new and useful Improvement in Rolling-Mill Rolls for Rolling Horseshoe-Blanks and other Articles; and I do hereby declare that the following is a full, clear, and exact description ofthe same, reference being had to the accompanying drawings, forming part ot' this specitication, in which- Figure l is a longitudinal vertical view of a roll for rolling horseshoe-blanks with my improvement. Fig. 2 is a central longitudinal section of the same. Fig. 3 is a face view of the collar which contains the creasing dies.

Similar letters of reference indicate correspondin g parts in the several figures. This invention consists in a novel and very simple and secure method of attaching creasing or other dies to rolling-mill rolls, whereby in case of the breakage or injury of one ofthe dies it may be replaced at less expense than when attached in the usual way. y i w To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation,

A is the roll, made with grooves a a and ridges b b ot' any suitable shape, to reduce the iron to the proper form by successive roll- This roll is reduced in size, as shown at c c in Fig. 2, near one of its-journals d d, for the reception of a steel collar, B, in which the creasing-dies C G are secured, and it has also cut upon it between the said reduced portion c c and the journal a screwthread, e, for the reception of a nut, f, by

which the said collar is clamped firmly against a shoulder, g, formed on the solid portion of the roll, The said collar is prevented from turning on the roll by means'ot a feather or steady-pin, h, on the r ll and a groove in the collar. The dies G C are made of proper form, and t tightly into taper dovetail grooves i i, provided for their reception in one face of the collar B. The dovetail construction of there grooves, which prevents the dies from moving in the direction of the length of the rolls, is illustratedin Fig. 1, and the taper form by which the dies are prevented from drawing out from the grooves in a direction radial to the axis of the roll is illustrated in Fig. 3. The above-rnentionedtaper form of the dies and grooves renders it. necessary for the dies to be inserted in the grooves from the interior of the collar before the latter is put on the roll. The inner ends ot the dies are made to conform to the circle of the interior of the collar when the dies have been pushed. out to the required position in the grooves to make their ou terends or operatingfaces project the proper distance beyond the collar and to make them fit tight in the grooves, and by thus conforming to the ring they are caused to have a rm bearing upon the solid portion c of the :roll when in operation. The dies thus constructed and tted to the collar B and to the roll, and further secured by the nut f screwing up against them, are just as strong and good in every respect as though all made of the same piece with the collar B, and much more economical and more expeditiously replaced, for in case of a die flying in hardening or breaking or being injured in use, it can be taken from the collar and replaced by a new one without requiring the whole collar to be made Vitn esses ALANsoN BoEDEN, LEMUEL KoLLooK. 

